module tb;
    initial begin
        byte twoD[4][6];
        foreach(twoD[i,j])
            twoD[i][j] = i*10+j;

        foreach(twoD[i]) begin
            $write("%2d",i);
            foreach(twoD[,j])
                $write("%3d",twoD[i][j]);
            $display;
        end
    end
endmodule